07-28-2012, 10:53 PM
My ICS issues are slightly different than I have read on TS. My 4.7L (2UZFE) starts and runs fine in the AM but she often stalls at stop signs after I make a short term stop (after the engine warms up) and then I restart and drive. I have checked fuel filter, spark plugs, air filter, PVC and vacuum hoses and found no issues. Is cleaning the Throttle Body the next logical step or perhaps the Mass Air Sensor or Idle Air Control Valve? I am over my head.
07-29-2012, 06:09 PM
my truck was having issues stalling only after it was run for a while and stopped and then restarted, like at a gas station. when the idle control motor was replaced it didnt happen agian. so it could be either the IACV or the idle motor.
07-29-2012, 08:50 PM
Yeah, the second thing the FSM says to check is the throttle position motor. The first is loose dipstick, oil filler cap gasket, or air leak in/around the intake, and around the throttle body gasket.
You can use a rubber hose next to your ear to check for vacuum leaks around the intake and base of the throttle body. You can also use it to check if the throttle position motor is working.
Turn the ignition to ON, (do NOT start the motor), and while moving the throttle cable lever at the side of the throttle body, put the end of the hose on top of the throttle position motor, and listen for it to work as you move the lever. Should NOT have any sounds of grinding or heavy friction.